@Francky, I started with the idea of independent control of each blind connected to a single Photon, but practically speaking when I have two window next to each other I’m fairly certain that I will only want both blinds at the same angle. In fact, I quickly created groups to control the all of the blinds in large areas of my house instead of trying to control individual windows.
As you pointed out, I’ve only connected a max of two servos to one Photon. I would love to have connected more servos to one Photon, but the wiring would have been problematic. I really didn’t have a good way to run cable from the windows to a central location where the Photon would sit. Short of ripping out the drywall and running the cable, I simply gave up and paired one Photon per window that were adjacent to each other.
I also shared your concern about current draw on greater than two servos/Photon. I was prepared to provide a separate 5V power rail for the servos should I have 3 or more connected. However, as I mentioned, I gave that up given the difficulty in running wires and distance limitations on carrying the voltage over long distances.